Filter
Top Products
11 - 21
MELSEC-Q
11 MANUAL CONTROL
11.3.3 Setting the required parameters for inching operation
The "Parameters" must be set to carry out inching operation.
The following table shows the setting items of the required parameters for carrying out
inching operation. When only inching operation will be carried out, no parameters
other than those shown below need to be set. (Use the initial values or setting values
within a range where no error occurs for trouble-free operation.)
Setting item Setting requirement
Factory-set initial value
(setting details)
Pr.1
Unit setting 3 (pulse)
Pr.2
No. of pulses per rotation (Ap) (Unit: pulse) 20000
Pr.3
Movement amount per rotation (Al) (Unit: pulse) 20000
Pr.4
Unit magnification (Am) 1 (1-fold)
Pr.5
Pulse output mode 1 (CW/CCW mode)
Pr.6
Rotation direction setting
0 (current value increases by
forward run pulse output)
Pr.11
Backlash compensation amount (Unit: pulse) 0
Pr.12
Software stroke limit upper limit value (Unit: pulse) 2147483647
Pr.13
Software stroke limit lower limit value (Unit: pulse) –2147483648
Pr.14
Software stroke limit selection 0 (current feed value)
Pr.15
Software stroke limit valid/invalid setting 0 (valid)
Pr.17
Torque limit setting value (Unit: %) 300
Pr.23
Output signal logic selection
0 (Pulse output to the drive
unit is negative logic)
Parameters
Pr.31
JOG speed limit value (Unit: pulse/s) 20000
: Setting always required.
: Set according to requirements (Leave set to the initial value when not used.)
REMARK
•
Parameter settings work in common for all control using the QD75. When carrying
out other controls ("major positioning control", "high-level positioning control", and
“OPR positioning control"), the respective setting items must also be set.
•
Parameters are set for each axis.
•
Refer to Chapter 5 "Data Used for Positioning Control" for setting details.